The number of sensors all around us is rapidly increasing. From smartwatches and heart-rate monitors to smart refrigerators and thermostats, everything is measured and tracked. All these sensors for the Internet of Things (IoT) devices need batteries and they consume a lot of power. The project ZERO (Towards Energy Autonomous Systems for IoT) aims to create efficient devices that exploit the energy already around them, such as light, vibration and heat.
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https://techxplore.com/news/2020-03-future-decrease-temperature-mobile-devices.html
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